/*
 * Copyright 2020-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.ehrbase.fhirbridge.ehr.converter.generic;

import org.apache.commons.lang3.StringUtils;
import org.ehrbase.client.classgenerator.interfaces.RMEntity;
import org.ehrbase.client.classgenerator.shareddefinition.Language;
import org.ehrbase.fhirbridge.ehr.converter.ResourceConverter;
import org.hl7.fhir.r4.model.Resource;
import org.springframework.lang.NonNull;

/**
 * @param <S> source type
 * @param <T> target type
 * @since 1.0.0
 */
@FunctionalInterface
public interface RMEntityConverter<S extends Resource, T extends RMEntity> extends ResourceConverter<S, T> {

    Language DEFAULT_LANGUAGE = Language.DE;

    T convert(@NonNull S resource);

    default Language resolveLanguageOrDefault(@NonNull S resource) {
        for (Language language : Language.values()) {
            if (StringUtils.equalsIgnoreCase(language.getCode(), resource.getLanguage())) {
                return language;
            }
        }
        return DEFAULT_LANGUAGE;
    }
}
